Table 4. Adjusted odds ratio obtained by means of logistic regression models for the associations of the less pathogenic bacterial groups with certain co-morbidities of 8333 patients undergoing cataract surgery.

	Coagulase-negative Staphylococci		Corynebacterium xerosis		Other diphtheroids		Propionibacteriae		Gram-negative diplococci
	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value
Age	1.01 (1.00–1.02)	0.004	1.02 (1.02–1.03)	<0.001	1.04 (1.03–1.05)	<0.001	1.00 (0.99–1.01)	0.777	1.04 (1.02–1.06)	0.001
Male sex	1.41 (1.24–1.60)	<0.001	1.14 (1.03–1.27)	0.016	0.84 (0.71–1.00)	0.053	2.60 (2.30–2.93)	<0.001	1.01 (0.76–1.34)	0.975
Diabetes	1.08 (0.95–1.22)	0.233	1.11 (1.01–1.23)	0.041	1.20 (1.02–1.40)	0.026	0.89 (0.79–1.01	0.061	1.50 (1.17–1.92)	0.002
Lung diseases	1.08 (0.93–1.27)	0.319	0.64 (0.56–0.73)	<0.001	1.26 (1.04–1.53)	0.020	1.02 (0.88–1.18)	0.831	0.81 (0.57–1-15	0.273
Smokers+ex-smokers	1.11 (0.96–1.29)	0.165	1.15 (1.02–1.30)	0.023	1.10 (0.90–1.34)	0.380	0.90 (0.78–1.02)	0.099	1.28 (0.93–1.76)	0.131
Handicapped patients	1.76 (1.33–2.33)	<0.001	1.19 (0.98–1.46)	0.088	1.36 (1.03–1.80)	0.032	1.17 (0.93–1.48)	0.170	1.00 (0.61–1.66)	0.989

Abbreviations: CI, confidence intervals; OR, odd ratio.

Bold-typed numbers indicate those positive associations that are statistically significant.